EP0583893A1 - Verfahren und Vorrichtung zum Herstellen von Säcken - Google Patents

Verfahren und Vorrichtung zum Herstellen von Säcken Download PDF

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Publication number
EP0583893A1
EP0583893A1 EP19930305863 EP93305863A EP0583893A1 EP 0583893 A1 EP0583893 A1 EP 0583893A1 EP 19930305863 EP19930305863 EP 19930305863 EP 93305863 A EP93305863 A EP 93305863A EP 0583893 A1 EP0583893 A1 EP 0583893A1
Authority
EP
European Patent Office
Prior art keywords
planar
plastic film
multiple plies
welding
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19930305863
Other languages
English (en)
French (fr)
Other versions
EP0583893B1 (de
Inventor
John Glyn-Woods
Ian Rhodes
Mike Pope
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chartex International PLC
Original Assignee
Chartex International PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chartex International PLC filed Critical Chartex International PLC
Publication of EP0583893A1 publication Critical patent/EP0583893A1/de
Application granted granted Critical
Publication of EP0583893B1 publication Critical patent/EP0583893B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7441—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc for making welds and cuts of other than simple rectilinear form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
    • B29C66/244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being non-straight, e.g. forming non-closed contours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7538—Condoms

Definitions

  • the invention is a welding tool for welding and cutting a tear seal edge into multiple plies of plastic film.
  • the welding tool includes a base and a knife edge on the base.
  • a cross section of the knife edge has three working surfaces for engaging the multiple plies of plastic film.
  • the three surfaces at the cross section are a planar cutting surface, an planar welding surface, and a planar separating surface.
  • the planar cutting surface presses into the multiple ply plastic film in a coplanar engagement with the multiple ply plastic film.
  • the planar welding surface is located on a first side of the planar cutting surface.
  • the planar welding surface fuses the multiple plies of plastic film.
  • the planar separating surface is on a second side of the planar cutting surface opposite to the planar welding surface.
  • the planar separating surface provides a clearance which assists in pushing the multiple ply plastic film away from the weld of the multiple ply plastic film at the tear seal edge.
  • a method for welding and cutting a multiple ply plastic article comprises the following steps. Passing of multiple plies of plastic film over a resilient flexible sheet into a reciprocating press is conducted. Pressing a knife edge on the reciprocating press into the multiple plies of plastic film and the resilient flexible sheet to form the plastic article and a tear seal edge in the multiple plies of plastic film then occurs.
  • the knife edge has a cross section of three surfaces for engaging the multiple plies of plastic film as described above. Stripping the excess of the plastic film from the plastic articles adhered to the resilient flexible sheet is then performed.
  • the invention is used as part of a commercially available machine for processing multiple plies of plastic film.
  • a reel of polyurethane film, a second reel, also, of polyurethane film or sheet material, and a reel of a resilient flexible sheet material such as backing paper are each fed into the machine.
  • Each of the reels is rotatably mounted on a shaft.
  • the films and backing paper proceed by clamping and moving means to a first press.
  • the first press is only used in a second embodiment of the method as described later and moves the films and backing paper to a hole punching station and, then, to a second press or reciprocating press before proceeding to a second transport station, a stripper, a perforator, a folding station, and a takeoff conveyer.
  • Figure 1 shows the finished product, but references to the final product help to explain its method of manufacture and its construction.
  • Figures 2 to 6 show details of the welding tool.
  • Figure 1 illustrates the backing paper 23.
  • the backing paper 23 extends substantially over the whole width of the machine.
  • the invention can be used to weld and cut a plurality of sheets of polymer or resin films.
  • the preferred embodiment of the invention forms both a "weld and cut” or a "tear seal edge" with two plies of commercially available polyurethane film.
  • the invention can be used to form a tear seal edge to make a large variety of multiple ply plastic articles, but the preferred embodiment of the invention makes plastic bags for use in female contraceptive devices.
  • the two sheets of polyurethane film are of slightly different widths with the underneath layer being of greater width than the upper layer.
  • the difference in widths can be seen in Figure 1 by comparing the lower layer 24 with the sides of the upper layer 25.
  • the lower layer 24 is adhered to the backing paper 23 around the horseshoe periphery 26 of the lower layer 24 and throughout the whole of its outer periphery while the inner or upper layer 25 is adhered to the lower layer 24 except at the front flat strip 27 so as to leave the bag open.
  • FIG. 2 illustrates one embodiment of the welding tool for welding the multiple plies of polyurethane. This welding tool is used in the reciprocating press.
  • the form of the preferred bags is, generally, a horseshoe shape.
  • the bags have an enlarged collar portion 28 adjacent the front with a, generally, constant diameter portion 30 to the rear, thus forming the main length of the bag, joined by a semicircular end 31.
  • FIGS 2 through 5 illustrate the welding tool.
  • the welding tool is, desirably, machined from metal and must have a smooth polished finish.
  • the smooth polished finish is especially required when the welding tool is heated, desirably, as an electrode, to melt the plastic films.
  • FIG 6 is an enlarged view of the flange or knife edge 40 of Figures 4 and 5.
  • the knife edge 40 has a cross section with three surfaces for engaging the multiple plies of plastic film.
  • the three surfaces at the cross section include a planar cutting surface 41, an planar welding surface 42, and a planar separating surface 43.
  • the planar welding surface 42 is on a first side of the planar cutting surface 41.
  • the planar welding surface 42 fuses the multiple plies of plastic film to substantially eliminate any flash of a weld formed by the fusion of the multiple plies plastic film.
  • the planar welding surface 42 can be cut at an angle of about 3° from the planar cutting surface 41.
  • the length of the planar welding surface 42 is about 300 microns and the height of the planar cutting surface 41 above the planar welding surface 42 is about 45 microns, and the length of the planar cutting surface 41 is about 100 microns.
  • the planar separating surface 43 is on a second side of the planar cutting surface 41 opposite to the planar welding surface 42 and is spaced 100 microns above it.
  • the planar separating surface 43 provides a clearance which assists in pushing the multiple plies of plastic film away from the weld of the multiple plies of plastic film at the tear seal edge of the welded plastic film.
  • the two polyurethane films of the lower layer 24 and the upper layer 25 and the backing paper 23 enter the reciprocating press.
  • the heated welding tool descends to engage the sheets.
  • the welding tool descends until the knife edge or line tip 36 engages the two sheets of plastic film and, in so doing, then welds the two sheets to each other along the horseshoe line and, also, to the sheet of backing paper 23.
  • a rear part 37 of the welding tool engages the rectangular area 27 of single ply plastic of lower layer 24 to weld it to the sheet of backing paper 23 while at the same time avoiding welding the upper layer 25 to the lower layer 24 so as to maintain an open entrance to the bag.
  • the welding tool also, provides the bags with a tear seal edge so that excess film can easily be removed.
  • the bags are then moved to a second transport station and the next set of bags enter the reciprocating press.
  • the bags are moved once again by clamps gripping the paper to index the bag the approximate distance along the processing line of the machine.
  • the bags are then moved to a stripping station.
  • the stripping station has means for removing the excess or surplus polyurethane along the tear seal edges.
  • the stripping procedure leaves the bags on the backing paper 23 as shown in Figure 1.
  • the bags can then moved to a perforating station.
  • the perforations cause a "line of weakness" 37 to be produced in the backing paper 23 as shown in Figure 1.
  • the bags are then passed to a folding station where the backing paper is folded in "fan-fold form" in batches of six bags on each side of a folded section of backing paper 23, i.e. twelve in total.
  • An off-take conveyer removes the bags on the folded backing paper 23 for storage.
  • the first press is, also, used and in a first operation to heat and seal the open area 27 of the lower layer 24 of plastic film to the backing paper 23.
  • the remaining operations can then be performed by a slightly modified tool in the second press in the same way as previously described, except for this weld to the backing paper 23.
  • the two sheets of polyurethane film need not be of different widths and can be the same width.
  • a plough can be provided to separate and guide the upper layer 25 of film away from the lower layer 24 so that the lower layer 24 can be welded.
  • the present invention thus provide a method and apparatus for producing plastic articles, such as bags of polyurethane film, adhered to a backing surface.
  • This combination can be used for a variety of purposes and, in particular, with reference to the Applicant's co-pending U.K. Patent Application No. 93 08453.1 where the bags are formed inter alia into contraceptive devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP19930305863 1992-07-28 1993-07-26 Verfahren und Vorrichtung zum Herstellen von Säcken Expired - Lifetime EP0583893B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9216040 1992-07-28
GB9216040A GB9216040D0 (en) 1992-07-28 1992-07-28 Method of and apparatus for forming bags

Publications (2)

Publication Number Publication Date
EP0583893A1 true EP0583893A1 (de) 1994-02-23
EP0583893B1 EP0583893B1 (de) 1997-05-28

Family

ID=10719445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930305863 Expired - Lifetime EP0583893B1 (de) 1992-07-28 1993-07-26 Verfahren und Vorrichtung zum Herstellen von Säcken

Country Status (6)

Country Link
EP (1) EP0583893B1 (de)
JP (1) JPH0768500A (de)
AT (1) ATE153593T1 (de)
CA (1) CA2101403A1 (de)
DE (1) DE69311025T2 (de)
GB (1) GB9216040D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3275634A1 (de) * 2016-07-27 2018-01-31 Synlatex Ltd, trading as SLG System zur herstellung von applikator-handschuhen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY153439A (en) * 2013-04-30 2015-02-11 John Tang Ing Ching Female condom with adhering shield and method of manufacture
TWI629977B (zh) * 2014-10-29 2018-07-21 仁政 鄭 女性保險套、製作女性保險套之程序與可以製造歐米茄狀或類似形狀的保險套設計的密封設備

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638963A (en) * 1949-03-31 1953-05-19 Us Army Apparatus for dielectric fabrication
GB1243123A (en) * 1969-08-19 1971-08-18 L R Industries Ltd Improvements in or relating to the manufacture of contraceptive sheaths
DE2836279A1 (de) * 1978-08-18 1980-03-06 Asf Gleitverschluss Gmbh Verfahren und vorrichtung zum herstellen von kunststoffbeuteln mit angeschweissten druck- oder gleitverschlussbaendern
DE8705710U1 (de) * 1987-04-18 1987-07-23 Alkor Gmbh Kunststoffe, 8000 Muenchen, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638963A (en) * 1949-03-31 1953-05-19 Us Army Apparatus for dielectric fabrication
GB1243123A (en) * 1969-08-19 1971-08-18 L R Industries Ltd Improvements in or relating to the manufacture of contraceptive sheaths
DE2836279A1 (de) * 1978-08-18 1980-03-06 Asf Gleitverschluss Gmbh Verfahren und vorrichtung zum herstellen von kunststoffbeuteln mit angeschweissten druck- oder gleitverschlussbaendern
DE8705710U1 (de) * 1987-04-18 1987-07-23 Alkor Gmbh Kunststoffe, 8000 Muenchen, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3275634A1 (de) * 2016-07-27 2018-01-31 Synlatex Ltd, trading as SLG System zur herstellung von applikator-handschuhen
US10201934B2 (en) 2016-07-27 2019-02-12 Synlatex Ltd Applicator mitt assembly system
US11034093B2 (en) 2016-07-27 2021-06-15 Slg Brands Limited Applicator mitt assembly system

Also Published As

Publication number Publication date
CA2101403A1 (en) 1994-01-29
EP0583893B1 (de) 1997-05-28
ATE153593T1 (de) 1997-06-15
GB9216040D0 (en) 1992-09-09
DE69311025D1 (de) 1997-07-03
DE69311025T2 (de) 1997-09-25
JPH0768500A (ja) 1995-03-14

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